RFI in French Sat/Sun, instead of Mandingo Mon-Fri

FRANCE   RFI in French Sat/Sun, instead of Mandingo Mon-Fri:
0800-0830 on 15455 ISS 500 kW / 198 deg to WeAf Mandingo Mon-Fri
0800-0830 on 15455 ISS 500 kW / 198 deg to WeAf French Sat/Sun
not parallel on other RFI frequencies of French Service
0800-0900 on 13695 ISS 500 kW / 204 deg to NWAf French
0800-0900 on 15300 ISS 500 kW / 195 deg to NoAf French
0800-0900 on 17850 ISS 500 kW / 160 deg to CeAf French
0800-0900 on 21580 ISS 500 kW / 155 deg to CeAf French