Very odd frequency of All India Radio on Dec.15

INDIA   Very odd frequency of All India Radio on Dec.15
1515-1530 on  7555.7 DEL 100 kW / 065 deg to SoAs Hindi
1530-1600 on  7555.7 DEL 100 kW / 065 deg to SoAs English
https://www.youtube.com/watch?v=c8oPv0ue-uk&feature=youtu.be
https://www.youtube.com/watch?v=xsD06B4kFs8&feature=youtu.be
https://www.youtube.com/watch?v=jhLNps6K7gQ&feature=youtu.be
https://www.youtube.com/watch?v=pr56LlzDWQQ&feature=youtu.be