PH STEEM STATS - Sorting for Created & Last Upvote Time Work Incorrectly

Steps:

1. Go https://ph-steemapp.herokuapp.com/
2. Scroll Down to Middle of the Page
3. Change Show Entries from 10 to 100
4. Click Symbol ^ and ∨ for Ascending and Descending For "Created" & "Last Upvote Time"
5. Observe

Expected Result: Sorting for Date/Time Under "Created" & "Last Upvote Time" should work correctly.

Actual Result: Sorting for Date/Time Under "Created" & "Last Upvote Time" work incorrectly. For example, Ascending for "Created" show Dec 2017 > Feb 2017 > Jan 2017 > July 2017.

Environment: Windows 8.1/Firefox