diff --git a/forms.py b/forms.py
index 68cfe3e..b7be90b 100644
--- a/forms.py
+++ b/forms.py
@@ -10,6 +10,7 @@
 from wtforms.widgets import TextArea
 
 from models import Feast, Music
+from utils import logger
 
 hymns = [('', 'None')] + [(h.ref, f'{h.ref} - {h.title}') for h in
                           Music.neh_hymns()]
@@ -17,6 +18,19 @@
 translations = [('', 'None')] + [(h.translation, f'{h.translation}') for h in
                           Music.neh_hymns()]
 
+class FeastForm(FlaskForm):
+    # Required fields
+    name = StringField('Name', validators=[DataRequired()])
+    month = StringField('Month', validators=[DataRequired()])
+    day = StringField('Day', validators=[DataRequired()])
+    collect = StringField('Collect', widget=TextArea(), validators=[DataRequired()])
+    # Optional fields
+    introit = StringField('Introit', widget=TextArea())
+    offertory = StringField('Offertory', widget=TextArea())
+    tract = StringField('Tract', widget=TextArea())
+    gradual = StringField('Gradual', widget=TextArea())
+    alleluia = StringField('Alleluia', widget=TextArea())
+
 class AnthemForm(Form):
     title = StringField('Anthem')
     composer = StringField('Anthem composer')
@@ -33,7 +47,7 @@ class PewSheetForm(FlaskForm):
     )
     secondary_feasts = SelectMultipleField(
         'Secondary Feasts',
-        choices=[('', '')] + feast_choices,
+        choices=[('', '')] + feast_choices, validate_choice=False
     )
     date = DateField('Date', validators=[DataRequired()])
     time = TimeField('Time', validators=[DataRequired()])
diff --git a/models.py b/models.py
index 43a566b..6c7e98f 100644
--- a/models.py
+++ b/models.py
@@ -17,9 +17,9 @@
 from models_base import get
 
 if typing.TYPE_CHECKING:
-    from forms import PewSheetForm, AnthemForm
+    from forms import PewSheetForm, AnthemForm, FeastForm
 
-from utils import get_neh_df, advent, closest_sunday_to, NoPandasError, logger
+from utils import get_neh_df, advent, closest_sunday_to, NoPandasError, logger, formatFeastName
 
 feasts_fields = ['name', 'month', 'day', 'coeaster', 'coadvent',
                  'introit', 'collect', 'epistle_ref', 'epistle',
@@ -38,9 +38,48 @@ def _none2datemax(d: Optional[dt.date]) -> dt.date:
 
 @define
 class Feast:
+    optionalFields = ['introit', 'gat', 'gradual', 'alleluia', 'tract', 'offertory']
+
+    def infer_gat(gradual, alleluia):
+        gat = None
+        if gradual:
+            gat = 'Gradual'
+        if alleluia:
+            if gat is not None:
+                gat = gat + ' and Alleuia'
+            else:
+                gat = 'Alleuia'
+        if gat is not None:
+            gat = gat + ' Proper'
+        return gat
+
     @classmethod
     def from_yaml(cls, slug):
         return _feast_from_yaml(slug)
+    
+    @classmethod
+    def to_yaml(cls, feastForm: 'FeastForm'):
+        name = formatFeastName(feastForm.name.data)
+        gat = cls.infer_gat(feastForm.gradual.data, feastForm.alleluia.data)
+        with open((DATA_DIR / name).with_suffix('.yaml'), "w") as f:
+            f.write('name: ' + feastForm.name.data + '\n')
+            #TODO: check validity of day and month, 
+            # i.e. generate Date instance with Date(str) and check if it exists
+            f.write('month: ' + feastForm.month.data + '\n')
+            f.write('day: ' + feastForm.day.data + '\n')
+            f.write('collect: ' + feastForm.collect.data + '\n')
+            for field in cls.optionalFields:
+                if field != 'gat':
+                    if feastForm[field].data:
+                        f.write(field + ': ' + feastForm[field].data + '\n')
+                else:
+                    if gat is not None:
+                        f.write('gat: ' + gat + '\n')
+
+        with open(DATA_DIR / '_list.txt', "a") as f:
+            f.write('\n' + name)
+
+
 
     @classmethod
     def all(cls):
diff --git a/pypew.py b/pypew.py
index a36cac8..2c221da 100644
--- a/pypew.py
+++ b/pypew.py
@@ -13,6 +13,8 @@
 import views
 from utils import logger
 
+from flask_wtf.csrf import CSRFProtect
+
 load_dotenv()
 
 
@@ -54,6 +56,7 @@ def create_app(pypew: Optional[PyPew] = None, **kwargs) -> Flask:
     app.add_url_rule('/feast/api/<slug>', 'feast_detail_api', views.feast_detail_api)
     app.add_url_rule('/feast/api/<slug>/date', 'feast_date_api', views.feast_date_api)
     app.add_url_rule('/feast/<slug>/docx', 'feast_docx_view', views.feast_docx_view)
+    app.add_url_rule('/pewSheet/feastCreation', 'create_feast', views.create_feast, methods=['GET'])
     app.add_url_rule('/pewSheet', 'pew_sheet_create_view', views.pew_sheet_create_view, methods=['GET'])
     app.add_url_rule('/pewSheet/docx', 'pew_sheet_docx_view', views.pew_sheet_docx_view, methods=['GET'])
     app.add_url_rule('/pewSheet/clearHistory',
@@ -101,6 +104,7 @@ def main(argv: Optional[Sequence[str]] = None) -> None:
 
     pypew = PyPew()
     app = create_app(pypew)
+    csrf = CSRFProtect(app)
 
     if args.debug:
         # noinspection FlaskDebugMode
diff --git a/templates/createFeast.html b/templates/createFeast.html
new file mode 100644
index 0000000..74e23fc
--- /dev/null
+++ b/templates/createFeast.html
@@ -0,0 +1,24 @@
+<form method="get" id="createFeastForm" action="{{ url_for('create_feast') }}">
+    {{ feastForm.csrf_token }}
+    {% for field in feastFormFields %}
+        <div class="row">
+            <div class="col-sm-3">
+                {{ feastForm[field].label(class='col-form-label') }}
+            </div>
+            <div class="col-sm-9">
+                {{ feastForm[field](class='form-control', id='feast-' + field) }}
+                {% if feastForm[field].errors %}
+                    {% for error in feastForm[field].errors %}
+                        <small class="font-small text-danger">
+                            {{ error }}
+                        </small>
+                    {% endfor %}
+                {% endif %}
+            </div>
+        </div>
+    {% endfor %}
+    <div>
+        <button id="cancel" type="reset">Cancel</button>
+        <input id="create-feast" type="submit" value="Create Feast">
+    </div>
+</form>
diff --git a/templates/serviceForm.html b/templates/serviceForm.html
index b4f2708..5f66c31 100644
--- a/templates/serviceForm.html
+++ b/templates/serviceForm.html
@@ -1,3 +1,6 @@
+<dialog id="feast-dialog">
+    {% include "createFeast.html" %}
+</dialog>
 <form action="{{ url_for('pew_sheet_create_view') }}"
       class="px-5">
     <div class="row mb-3">
@@ -32,7 +35,7 @@ <h3 id="titleH3"></h3>
     <div class="row mb-3">
         {{ form.secondary_feasts.label(class='col-sm-2 col-form-label') }}
         <div class="col-sm-5">
-            {{ form.secondary_feasts(class='form-select') }}
+            {{ form.secondary_feasts(class='form-select', formnovalidate=True) }}
             {% if form.secondary_feasts.errors %}
                 {% for error in form.secondary_feasts.errors %}
                     <small class="font-small text-danger">
@@ -41,9 +44,11 @@ <h3 id="titleH3"></h3>
                 {% endfor %}
             {% endif %}
         </div>
+        <div class="col-sm-3">
+            <button id="add-feast-dialog" type="button">Add Feast</button>
+        </div>
     </div>
 
-
     <div class="row mb-3">
         {{ form.date.label(class='col-sm-1 col-form-label') }}
         <div class="col">
@@ -183,3 +188,136 @@ <h3 id="titleH3"></h3>
 </form>
 
 <script src="{{ url_for('static', filename='serviceForm.js') }}"></script>
+<script>
+
+    // Note: logic needs to be able to access python API and hence was placed here
+    var feastsArray = [];
+    var monthNames = [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ]; 
+    // source: https://www.freecodecamp.org/news/format-dates-with-ordinal-number-suffixes-javascript/
+    const nthNumber = (number) => {
+        if (number > 3 && number < 21) return "th";
+        switch (number % 10) {
+            case 1:
+            return "st";
+            case 2:
+            return "nd";
+            case 3:
+            return "rd";
+            default:
+            return "th";
+        }
+    };
+    var feastName = document.getElementById("feast-name");
+    var feastDay = document.getElementById("feast-day");
+    var feastMonth = document.getElementById("feast-month");
+    feastName.addEventListener('change', checkForNameDuplicates);
+    feastDay.addEventListener('change', checkForDateDuplicates);
+    feastMonth.addEventListener('change', checkForDateDuplicates);
+    
+    function checkForDateDuplicates() {
+        var day = feastDay.value? parseInt(feastDay.value) : 0;
+        var month = feastMonth.value? parseInt(feastMonth.value): 0;
+        if(day == 0 || month == 0){
+            return;
+        }
+        console.log(nthNumber(day) + ', ' + monthNames[month-1]);
+        var similarityDetected = false;
+        feastsArray.every(function (el) {
+            // compare date of feast to input month and day
+            var dateComponents = el.next.split(' ');
+            if(dateComponents.length == 4 && (day + nthNumber(day) == dateComponents[1]) && monthNames[month-1] == dateComponents[2]){
+                similarityDetected = true;
+                return false;
+            }
+            
+            return true;
+        });
+
+        if (similarityDetected) {
+            alert("You're creating a feast for " + day + "." + month + "., but there already exists a feast on this date; are you accidentally creating a duplicate?");
+        }
+    }
+
+    function checkForNameDuplicates() {
+        var input = feastName.value;
+        var words = input.split(' ');
+        var similarityCt = 0, similarFeast = '';
+        feastsArray.every(function (el) {
+            if (similarityCt > 1) {
+                return false;
+            }
+            similarityCt = 0;
+            words.every(function (word) {
+                if (similarityCt > 1) {
+                    return false;
+                }
+                if (el.name.includes(word)) {
+                    if (word != 'and') {
+                        similarityCt++;
+                    }
+                    if(similarityCt == 2){
+                        similarFeast = el.name;
+                    }
+                }
+                return true;
+            });
+            return true;
+        });
+
+        if (similarityCt > 1) {
+            alert("You're inputting " + input + ", but " + similarFeast + " already exists; are you accidentally creating a duplicate?");
+        }
+    }
+
+    const dialog = document.getElementById("feast-dialog");
+    const addFeastBtn = document.getElementById('add-feast-dialog');
+    addFeastBtn.onclick = () => {
+        dialog.showModal();
+    };
+
+    const cancelButton = document.getElementById("cancel");
+    cancelButton.onclick = () => {
+        dialog.close("Feast creation cancelled");
+    };
+
+    function updateFeasts(){
+        // refresh feasts
+        console.log('retrieved data from database');
+        const feastsApiUrl = "{{ url_for('feast_upcoming_api') }}";
+        fetch(feastsApiUrl).then(response => response.json())
+        .then(function(response) {
+            // clear choice options
+            var secondaryFeastsField = document.getElementById('secondary_feasts');
+            secondaryFeastsField.replaceChildren();
+            // recreate choice options
+            response.forEach(element => {
+                var opt = document.createElement('option');
+                opt.text = element.name;
+                opt.value = element.slug;
+                secondaryFeastsField.add(opt);
+            });
+            feastsArray = response;
+        });
+    }
+
+    const createFeastBtn = document.getElementById("create-feast");
+    createFeastBtn.onclick = () => {
+        try {
+            dialog.close("Feast creation request submitted!");
+            // wait some time for database update
+            const myTimeout = setTimeout(updateFeasts, 2000);
+        } catch (error) {
+            dialog.close("Feast creation aborted due to errors!");
+        }
+    };
+
+    dialog.addEventListener('close', function (e) {
+        e.preventDefault();
+        console.log(dialog.returnValue);
+    });  
+
+    // load secondary feast options on init
+    (() => {
+        updateFeasts();
+    })();
+</script>
diff --git a/utils.py b/utils.py
index a576dd4..7fd61ab 100644
--- a/utils.py
+++ b/utils.py
@@ -75,3 +75,7 @@ def advent(year: int) -> date:
         return christmas - timedelta(days=christmas_dow + 7*3)
     else:
         return christmas - timedelta(7 * 4)
+
+def formatFeastName(name: str) -> str:
+    nameComponents = name.split()
+    return ('-').join(nameComponents)
\ No newline at end of file
diff --git a/views/pew_sheet_views.py b/views/pew_sheet_views.py
index c76e8d7..cafe595 100644
--- a/views/pew_sheet_views.py
+++ b/views/pew_sheet_views.py
@@ -7,17 +7,24 @@
                    send_file, session, url_for)
 from werkzeug.datastructures import ImmutableMultiDict
 
-from forms import PewSheetForm
+from forms import PewSheetForm, FeastForm
 from models import Feast, Service
 from utils import cache_dir, logger
 
-__all__ = ['pew_sheet_create_view', 'pew_sheet_clear_history_endpoint', 'pew_sheet_docx_view']
+__all__ = ['pew_sheet_create_view', 'pew_sheet_clear_history_endpoint', 'pew_sheet_docx_view', 'create_feast']
 
 dotenv.load_dotenv()
 COOKIE_NAME = os.environ.get('COOKIE_NAME', 'previousPewSheets')
 
+def create_feast():
+    feastForm = FeastForm(request.args)
+    print('Into feast creation...')
+    Feast.to_yaml(feastForm)
+    return make_response('', 204)
 
 def pew_sheet_create_view():
+    feastFormFields = ["name", "month", "day", "collect", "introit", "offertory", "tract", "gradual", "alleluia"]
+    feastForm = FeastForm(request.args)
     form = PewSheetForm(request.args)
     if not form.primary_feast.data:
         form.primary_feast.data = Feast.next().slug
@@ -49,10 +56,9 @@ def pew_sheet_create_view():
             pass
 
     previous_services.sort(key=lambda args_service: args_service[1].date)
-
     return render_template(
         'pewSheet.html', form=form, service=service,
-        previous_services=previous_services
+        previous_services=previous_services, feastForm=feastForm, feastFormFields=feastFormFields
     )