National Sister's Day

Happens annually on the 1st Sunday of August. In 2019, this is August 4th.

Frequency:
1st Sun
in Aug
Hashtags:
References:
holidayinsights.com/moreholidays/August/sistersday.htm
dates.abouttravelingtheworld.com/special-holidays/sisters-day/
punchbowl.com/holidays/sisters-day

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